INFRARED IMAGER READOUT ELECTRONICS

摘要

Readout integrated circuits placed underneath the suspended sensing elements detect changes of electrical resistance of sensing elements and digitize the signals with digital to analog convertor for each element. Readout electronics provides low parasitics, high signal to noise ratio, high data rate, high dynamic range and instantaneous global readout.

主权项

1. A method of reading out a resistance of a sensor in an array of sensors without perturbing an integration process comprising:
Providing a readout integrated circuit monolithically integrated with the sensor wherein the readout integrated circuit comprises a constant voltage source, an integration capacitor and a source follower; Applying the constant voltage to the sensor using the constant voltage source; Accumulating resulting charge passed through the sensor on the integration capacitor; Sampling the voltage on the integration capacitor using the source follower thereby not affecting charge accumulation in the integration capacitor.